The City Select Bassinet Conversion Kit contains plush fabric and support bracket that convert the City Selectâs single seat into a bassinet in a few simple steps. Simply remove the fabric seat of the stroller and snap the bassinet fabric onto the same frame. (Single seat needed to complete bassinet conversion. To use bassinet in double capacity mode, the second seat for the stroller must be purchased in advance) Max. weight capacity: 25 lbs.